Search found 4101 matches

by Laskos
Mon Jan 21, 2019 4:31 pm
Forum: Computer Chess Club: General Topics
Topic: Schizophrenic rating model for Leela
Replies: 14
Views: 783

Re: Schizophrenic rating model for Leela

I was hoping someone would come up with an alternative, two-parameter Elo model able to describe Leela's performance... Well, than generalizing and overhauling the whole Elo system for all engines, I just came up with "Leela rating model" for one engine. A two-parameter Elo model could surely incor...
by Laskos
Mon Jan 21, 2019 1:43 pm
Forum: Computer Chess Club: General Topics
Topic: Schizophrenic rating model for Leela
Replies: 14
Views: 783

Re: Schizophrenic rating model for Leela

Ah, so you say there is an positional super strong Leela and an tactical weak Leela, two personalities. -- Srdja A proposal. But I am not sure. Is it dominated by a move by move double personality, phases of the game, game by game, many games by many games? Probably closer to the move by move doubl...
by Laskos
Mon Jan 21, 2019 1:16 pm
Forum: Computer Chess Club: General Topics
Topic: Schizophrenic rating model for Leela
Replies: 14
Views: 783

Re: Schizophrenic rating model for Leela

Ah, so you say there is an positional super strong Leela and an tactical weak Leela, two personalities. -- Srdja A proposal. But I am not sure. Is it dominated by a move by move double personality, phases of the game, game by game, many games by many games? Probably closer to the move by move doubl...
by Laskos
Mon Jan 21, 2019 12:47 pm
Forum: Computer Chess Club: General Topics
Topic: Schizophrenic rating model for Leela
Replies: 14
Views: 783

Re: Schizophrenic rating model for Leela

... So, in rating lists, Leela's rating may be almost arbitrary, depending on opponents. If you give here weak opponents, she would be rated lower, if we give here strong opponents, she would be rated higher. The "Elo compression" when a regular engine plays Leela is very pronounced, especially on ...
by Laskos
Mon Jan 21, 2019 10:27 am
Forum: Computer Chess Club: General Topics
Topic: Schizophrenic rating model for Leela
Replies: 14
Views: 783

Schizophrenic rating model for Leela

If we assume that a regular engine sees Leela as a schizophrenic, or a double personality engine, the scores one gets of regular engines against Leela can be explained by the usual Elo logistic. And an "Elo" rating can be defined for Leela, we will call it Elo_of_Leela, although Leela in a pool of r...
by Laskos
Sun Jan 20, 2019 10:41 am
Forum: Computer Chess Club: General Topics
Topic: Why Lc0 eval (in cp) is asymmetric against AB engines?
Replies: 16
Views: 2326

Re: Why Lc0 eval (in cp) is asymmetric against AB engines?

I think that’s the major factor, especially at this TC, but “comtempt” (relatively dramatic cp scores) also plays a part...when possible I exclusively use win% with leela now because after a short time you can understand her evaluation in traditional “+-, +/-, +/=“, etc terms. If the cp value is in...
by Laskos
Sat Jan 19, 2019 12:36 pm
Forum: Computer Chess Club: General Topics
Topic: Why Lc0 eval (in cp) is asymmetric against AB engines?
Replies: 16
Views: 2326

Re: Why Lc0 eval (in cp) is asymmetric against AB engines?

New shape of performance versus eval with new hardware (RTX 2070 GPU), new test30 net, time control 15s + 0.25s. In these conditions, Lc0 on RTX 2070 and SF10 on 4 strong i7 cores are equally matched in strength: Score of lc0_v201_32721 vs SF10: 49 - 49 - 102 [0.500] 200 Elo difference: 0.00 +/- 33....
by Laskos
Wed Jan 16, 2019 1:14 pm
Forum: Computer Chess Club: General Topics
Topic: Lc0 with latest test30 nets is vastly superior positionally
Replies: 27
Views: 2584

Re: Lc0 with latest test30 nets is vastly superior positionally

Lc0 score is no surprise with 40 MB of learning data. How about testing Brainfish? Lc0 is a pattern learner. Cerebellum actually contains many of these openings. This positional strength of Lc0 is probably covering midgame too, where there are many not covered by a book positions (most). Aside that...
by Laskos
Wed Jan 16, 2019 10:01 am
Forum: Computer Chess Club: General Topics
Topic: Lc0 with latest test30 nets is vastly superior positionally
Replies: 27
Views: 2584

Re: Lc0 with latest test30 nets is vastly superior positionally

On my positional Openings200 test suite, largely based on databases of human games, I used Polyglot with particular settings, as engines like Lc0 and SF behave very differently in depth and such output. I used a setting whether from time/2 to time/1 engine sticks to the correct solution, as this se...
by Laskos
Tue Jan 15, 2019 11:09 pm
Forum: Computer Chess Club: General Topics
Topic: Lc0 with latest test30 nets is vastly superior positionally
Replies: 27
Views: 2584

Re: Lc0 with latest test30 nets is vastly superior positionally

b2 b3.JPGAnother position that I suggest to add is this. Very very difficult for a program to find b3 in order to reply on Nc5 with Rb1! and b4 (what does Leela play?) This one Leela with one of the latest test30 nets doesn't solve, it sticks to f2-f3 for at least 20 minutes (40 million nodes). The...